I have worked with @Nikolay on this, and his response was the following:

everything Ok, you have to know logic: rollover ONLY CAP-data, main trafic not rollover!So on first screen: not used CAP 24.6 +20 (main data) = 44.6 as it issecond screen - 36.2 + 20 = 56.2

My response to that:

Hi Nik! Thanks for checking, however the logic does not make sense... In a capped environment we need to have main data to also rollover, as the client have paid for that data aswell.. how can we make this work?

He then replied:

Hi goose, now it's not working, but I sent it to our dev-team and I think they will fix it, so please wait

Thank you @Nikolay, I hope we can get this rollover working the way I think it should be working